package string;

public class StringAndStringBuilderDemo {
    public static void main(String[] args) {
       /* String str="a";
        for(int i=0;i<100000;i++){
            str=str+"a";
        }
        System.out.println("执行完毕");*/

        StringBuilder builder=new StringBuilder("a");
        for(int i=0;i<1000000;i++){
            builder.append("a");
        }
        System.out.println(builder);

    }
}
